How to characterize nodes and edges in dynamic attributed networks based on
social aspects? We address this problem by exploring the strength of the ties
between actors and their associated attributes over time, thus capturing the
social roles of the actors and the meaning of their dynamic interactions in
different social network scenarios. For this, we apply social concepts to
promote a better understanding of the underlying complexity that involves
actors and their social motivations. More specifically, we explore the notion
of social capital given by the strategic positioning of a particular actor in a
social structure by means of the concepts of brokerage, the ability of creating
bridges with diversified patterns, and closure, the ability of aggregating
nodes with similar patterns. As a result, we unveil the differences of social
interactions in distinct academic coauthorship networks and questions \&
answers communities. We also statistically validate our social definitions
considering the importance of the nodes and edges in a social structure by
means of network properties.Comment: 11 pages, 5 figure